I have a 1999 Dodge Durango SLT 4x4 with the 5.9 Magnum in it. Lately, it's been very slow to turn over, almost like a dead battery. However, it does start, and the battery gauge stays right in the middle of the voltage field, where it normally does. On friday, however, it did the same thing when going to pick up my kids from school, but when we went to leave to go to the store about 30 mins later, it gave me nothing. Took the battery out, went to a parts store, where they said it was at about 490 out of 700 amps. The battery was manf'd in 2008. I charged it over night, put it back in, and now all I get is an electronic clicking noise. But as long as I hold the key, eventually the engine will start to very slowly crank, and then gradually crank a little more and a little more, until it starts to fire. However, in order to keep it running, I have give it gas and keep the RPMs up, otherwise it will die. Even while I'm driving it, I have to shift to neutral and keep my foot on the gas a bit otherwise it will die. Occasionally, it will drive normally, but most of the time, it will not idle at all. I've been religious about oil changes and maintenance, periodic fuel system cleaners, always the same brand. Mechanic assured me using 15W-40 in the engine would help keep it clean (I know, that's a diesel oil, but was told it's good to run on high-mileage vehicles because it keeps any gunk cleaned out), and I buy good gas about once a week. As an afterthought, I have had periodic issues with corrosion building up on e negative battery terminal, and I replaced the post connectors for both the + and - sides. Any ideas what we could be looking at here? Sorry for e lengthy narrative.
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